CVE-2026-90062 netfilter: nf_tables: move hardware offload step after building the chain blob
A race condition in Linux kernel netfilter hardware offload could cause inconsistent firewall states, potentially allowing security bypass.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-90062?
CVE-2026-90062 is a high-severity vulnerability in Linux, published on 17 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: move hardware offload step after building the chain blob
Allocate the chain blob before the ruleset offload to reduce chances of entering an inconsistent state where the offloaded ruleset in the nic and the software ruleset differ.
Which versions are affected by CVE-2026-90062?
How do I fix CVE-2026-90062?
Apply the vendor's patch.
Is CVE-2026-90062 being exploited?
There is no known exploitation of CVE-2026-90062 in the wild and no public exploit code.
Sources
Also known as AZL-102513, BELL-CVE-2026-90062, DEBIAN-CVE-2026-90062, GHSA-7p55-3fjg-254h, UBUNTU-CVE-2026-90062.